Read Sony XVM-R70 Service Manual online
14
XVM-R70
SECTION 5
ELECTRICAL ADJUSTMENTS
5-1. EQUIPMENT USED
The following measuring equipment are used for these electrical adjustments:
• Oscilloscope
• NTSC pattern generator
• Stabilized power supply
• Digital voltmeter
• Frequency counter
• Oscilloscope
• NTSC pattern generator
• Stabilized power supply
• Digital voltmeter
• Frequency counter
5-2. CONNECTION OF EQUIPMENT
Unless otherwise specified, the equipment should be connected as shown below.
5-3. SETUP FOR ADJUSTMENT
The 10-step gray scale signal from the NTSC pattern generator is used as an adjustment
signal for V COM voltage/position adjustment as well as VIDEO adjustment.
signal for V COM voltage/position adjustment as well as VIDEO adjustment.
10-step gray scale signal (with burst), 1Vp-p, 75
Ω
VIDEO OUT
(75 Ω)
NTSC pattern
generator
main board
TP507(+)
TP500(-)
TP507(+)
TP500(-)
monitor
XVM-R70
XVM-R70
connection box
XA-115
XA-115
stabilized
power supply
14.4 V
power supply
14.4 V
GND
ACC
BA
TT
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